It can be correctly said that ITW owns both Hobart and Miller and because of this they certainly do share some common components. The problem with the misconception that one owns the other is that the story usually goes that the Hobart is an inferior machine which is simply not true, due to differing markets they have different features but Miller and Hobart are still competitors just like Chevy and Buick for instance are competitors within GM but Chevy does not own Buick or the other way around.